[Bug rtl-optimization/69891] wrong code with -mstringop-strategy=libcall @ i686

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69891

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 26 15:53:43 2016
New Revision: 233743

URL: https://gcc.gnu.org/viewcvs?rev=233743&root=gcc&view=rev
Log:
        PR rtl-optimization/69891
        * dse.c (scan_insn): If we can't figure out memset arguments
        or they are non-constant, call clear_rhs_from_active_local_stores.

        * gcc.target/i386/pr69891.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr69891.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dse.c
    trunk/gcc/testsuite/ChangeLog